<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }
      h2 {
        font-size: 40px;
        color: #90c;
      }
    </style>
  </head>
  <body>
    <h2>hello, 饭已 OK 啦, 下来密西啦~~ index.html 文件</h2>
  </body>
</html>
